In the first robbery at a Dollar General store in Clearwater on Oct. 20, the man showed a clerk a black, semiautomatic handgun and demanded money. The employee complied and the robber ran away.

A week later, the man struck twice in Dunedin. On Oct. 26, he robbed Munchee's Store at 614 Union St. On Oct. 27, he hit the Dodge Store at 466 Patricia Ave. In both cases, the man demanded money while pointing a semiautomatic handgun at employees.

Most recently, authorities said, the man robbed a Walgreens at 1505 S Belcher Road on Monday.

At the Walgreens, as well as at both of the robberies in Dunedin, the man wore a mask.

He is described as black, in his 30s, 6-foot to 6-foot-2 and 200 to 240 pounds. He was last seen wearing a dark hooded sweatshirt with a white design on the back and dark colored pants.

The Pinellas County Sheriff's Office, which is investigating the Dunedin cases, and the Clearwater Police Department are asking that anyone with information call the Sheriff's Office at (727) 582-6200 or Clearwater police at (727) 562-4200.

Those who wish to remain anonymous and to be eligible for a Crime Stoppers reward can call Crime Stoppers of Pinellas County at 1-800-873-8477 or provide a tip online at CrimeStoppersOfPinellas.org.